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Bioelectrical impedance tomography device and method

A bioelectrical impedance and tomographic imaging technology is applied in the field of medical devices to achieve the effects of reducing costs, improving application prospects and simplifying processes

Active Publication Date: 2022-08-05
WEST CHINA HOSPITAL SICHUAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when the patient's respiratory condition is poor or there is an emergency, it is inconvenient to perform imaging examinations

Method used

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  • Bioelectrical impedance tomography device and method
  • Bioelectrical impedance tomography device and method
  • Bioelectrical impedance tomography device and method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Example 1 Bioelectrical impedance tomography device

[0036] The bioelectrical impedance tomography apparatus of this embodiment is as follows: Figure 1-3 As shown, it includes a flexible belt 1 with 16 electrode buckles 2. In this embodiment, the distance between adjacent electrode buckles 2 is equal, and the size is set to d. The value of d can be selected from 1cm to 15cm. In the example, it is preferably 5 cm.

[0037] In this embodiment, the number of electrodes 3 is 16, and the electrodes 3 are ECG electrode pads, which are fixed on the flexible belt 1 through the electrode buckle 2, and the ECG electrode pads are directly pasted on the surface of the human body during use.

[0038] The electrode buckle 2 is also provided with an inertial sensor 4. In this embodiment, the inertial sensor selects a single-axis accelerometer to provide the angle between its axial direction and the direction of gravity ( Figure 4 The angle α between the y-axis in and the gravity ...

Embodiment 2

[0040] Example 2 Bioelectrical impedance tomography method

[0041] In this embodiment, the bioelectrical impedance tomography apparatus described in Embodiment 1 is used for imaging, and its working process is as follows Figure 5 shown, specifically:

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Abstract

The invention belongs to the technical field of medical instruments, and particularly relates to a bioelectrical impedance tomography device and method. The device comprises a flexible belt, the flexible belt is provided with electrodes and inertial sensors, the number of the electrodes and the number of the inertial sensors are equal, and the electrodes and the inertial sensors are arranged in pairs. According to the imaging method, the coordinates of the electrodes are determined according to the distance between the inertial sensors and the included angle between the inertial sensors and the gravity direction, the distance between the electrodes is calculated, the thorax of a detected patient is determined, and then the electrodes are used for conducting bioelectrical impedance tomography detection. According to the invention, the process of bioelectrical impedance tomography can be effectively simplified, the efficiency is improved, the cost is reduced, and the method has a good application prospect.

Description

technical field [0001] The invention belongs to the technical field of medical devices, and in particular relates to a bioelectrical impedance tomography imaging device and method. Background technique [0002] Bioelectrical Impedance Tomography (Electrical Impedance Tomography, EIT) technology is a new type of medical functional imaging technology. The relationship between the two reconstructs the internal electrical impedance value of the human body or the change value of the electrical impedance. Compared with X-ray and MRI, this imaging method has the characteristics of non-radiation and real-time, and can be monitored by bedside for a long time. [0003] When EIT is used for lung ventilation imaging, it is realized by a series of electrodes (for example, 16 or 32) equidistant electrodes around the patient's thoracic cavity. One pair of electrodes is used as excitation electrodes, and the other electrodes are used as detection electrodes to obtain a set of data. The sw...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B5/0536
CPCA61B5/0536
Inventor 李孝锦周永方金晓东张中伟王波康焰
Owner WEST CHINA HOSPITAL SICHUAN UNIV